Machine for cutting stay-bolts



(No Model.) 3 Sheets-Sh eet 1.

- J. PLAYER.

MACHINE FOR CUTTING STAY BOLTS.

Patented July 11 lllllrl F o .llllf'llll!Ill/lllllllfll/f"IL ll/Ill (No Model.)

J PLAYER MACHINE FOR CUTTING STAY BOLTS. No. 501,296.

Patented July 11 (No Model.) a shets sheet'ii;

J. PLAYER.

. MACHINE FOR CUTTING STAY BOLTS. No. 501,296. Patented July 11, 1893.

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UNITED STAT S ATENT OFFICE.

JOHN PLAYER, OF TOPEKA, KANSAS.

MACHINE FOR CUTTING STAY-BOLTS.

SPECIFICATION forming part of Letters Patent No. 501,296, dated July 11, 1893. Application filed January 10, 1893. Serial No. 457,897. (No model.)

To a whom it may concern:

Be it known that I, JOHN PLAYER, of Topeka, Kansas, have invented a new and useful Machine for Breaking Stay-Bolts, of which the following is a specification.

In repairing locomotive and other boilers it frequently becomes necessary to remove the fire box or some of the other parts of the boiler, and in order to do this to cut or break the stay bolts by which such parts are fastened together. It is the object of my invention to provide a machine for this purpose and which is preferably operated by steam, air, or other fluid pressure, and my invention consists in the features, combinations and the details of construction hereinafter described and claimed.

In the drawings, Figure 1 is a front elevation of one form of my improved stay bolt breaking machine, in position for use; Fig. 2 a section on line 2 of Fig. 1 looking in the direction of the arrow; Fig. 3 a detail view of the breaking tool; Fig. 4 a view similar to that shown in Fig. 1 illustrating a modification; Fig. 5 a detail of the breaking tool used with this form; Fig. 6 an elevation of the adjusting nut'. Figs. 7 and Sam sections on lines 7 and 8 respectively of Fig. 6, looking in the direction of the respective arrows. Fig. 9 is a side elevation of this nut taken in the direction of right angles at Fig. 6, and Fig. 10 a detail.

A represents the fire box, the rear wall of which has been removed,A the outer wall, a the water space between the two walls, and A the stay bolts, some shown broken and some unbroken.

The machine hereinafter to be described can be used for breaking stay bolts in a large variety of structures and I have shown it in connection with this fire box merely as an illustration, the fire box .being no part of the invention.

The machine itself may be constructed in the following manner: I first make a frame 13 of any desired form, shown more particularly inthe first two figures of the drawings. This frame is provided with a plane or flat face 1) adapted to bear against the end of the boiler or fire box. Preferably, though not necessarily, cast integral with this frame is a cylinder 0, in which is a piston C carrying a piston rode, the outer end of which is slotted as indicated by dotted lines in Fig. 2. This cylinder is provided with a suitable means for permitting the admission and escape of steam or other fluid, as, for example, a pipe 0'. The frame is also preferably provided with two bearings or journals D, D. A lever E, preferably of the form shown in Figs. 1 and 2, is adapted to be supported upon a pivot e in one of these bearings. One arm of this lever engages with or enters the slot in the piston rod 0. The other arm contacts with a block F on the screw threaded rod F, being preferably bifurcated, as shown in Fig. 1. At one end the rod F is provided with a cutting or breaking edge f. The frame is preferably slotted, as shown at f, to permit of the passage of the rod therethrough.

The block F above referred to may be a simple nut adapted to be screwed back and forth along the rod, but I prefer to construct it as shown more particularly in the last five figures of the drawings. A box or case G is made of any suitable dimensions and material and open at one end, shown at the right hand in Fig. 6. This box has an internal groove 9 (see Fig. 7) and is further provided with one or more handles G, by means whereof it is turned when it is desired to screw the block back and forth on the rod. Bolted or otherwise secured to this box are two arms or bars H, preferably of the form shown in the drawings. Within the box fit the two parts I, I, of the nut, provided with internal screw threads adapted to mesh with those on the rod F. These parts of the nut are provided with ribs 2', t, of a size adapted to be received by engaging with the groove g in the box G. The rib z" is extended to form a loop I as shown more particularly in Fig. 10. I next make a cam or eccentric J, fitting inside of the loop I and supported upon trunnions j, which are journaled in the bars H. To one of these trunnions is secured the operating handle or lever K. This block I may be put together as follows: One of thebars H is removed, the two parts of the nut then slid into the box, the cam inserted within the loop I and the plate H and handle K then again attached. parts are in the position shown in Fig. 6, the block is adapted to be screwed back and forth It operates as follows: When theto various points upon the rod. This, of course, is a slow process, and if it be desired to move the block with rapidity the eccentric may be revolved, releasing the parts of the nut, which may then be opened to disengage from the threads on the rod, enabling the whole block to be slipped rapidly along the rod, after which the eccentric may be re- Volved back again to bring the two parts of the nut into such position that their threads shall again mesh with the threads upon the rod. The machine is provided with chains L, or1 other suitable means whereby it may be sup ported. It operates as follows: The rear plate of the fire box is removed, the frame being in proper position, and the cutting bar F insorted into the water chamber and moved un-' til its cutting or breaking edge is brought against the first of the stay bolts which it is desired to break. The block F is then screwed up until it comes tightly against the end of the lever E. Steam or other suitable fluid is; then admitted to the cylinder, forcing the piston in (Fig. 2) and rocking the lever E. This moves the block and the break-rod to which 3 it is attached outward away from the boiler with great force, instantly and readily breaking the stay bolt. After this the fluid may be I allowed to escape from the cylinder and the parts moved back to their normal position, the breaking barbrought into connection with 7 another stay bolt and the process repeatedb WVhen it is desired to break the bolts upon the other side of the fire box the lever may be removed from the bearing D and secured in the bearing D, operating in precisely the same manner as above described. 'In the form shown in Figs. 4 and 5, the machine operates in substantially the same manner, but

with the movements of the parts in theopposite direction, that is to say, the bolts are broken by pushing the rod F inward instead of pulling it outward. The frame B, with itscylinder, piston, piston rod, bearings and lever, is made in substantially the same manner as in Figs. 1 and 2. Inasmuch, however,

as the parts operate when moved in the reverse direction the pipe 0' is located at the other side of the piston from its location in Fig. 1. Furthermore as the device operates by pushing inward some means must be used j for anchoring or securing the machine in place. To accomplish this I prefer to pro-" vide an anchor bar M, of any suitable dimensions and material, adapted to rest against the front end of the fire box and connected; with the frame B by means of tie rods N passing through the anchor bar and lugs on the frame, and provided with nuts n, whereby the device may be adjusted to, various sizes of fire boxes. The rod F is preferably provided with two breaking faces f f The operation of this form of the device is so similarto that already described that I do not consider it necessary to restate it, further than again saying that the bolts are broken by the action of the lever forcing the rod in, instead of drawing it out. By this means I provide a highly efficient mechanism for breaking and removing the stay bolts, which works with great simplicity and rapidity and with most absolute efficiency, and while I have described more or less precise forms I do not intend to limit myself thereto, but contemplate all proper changes in form, and proportions and the substitution of equivalent parts that may be desirable or necessary.

I claim- 1. In a stay bolt breaking machine, the combination of a frame, a lever pivoted in such frame, a breaking rod operated by such lever, and means for rocking such lever to operate the rod and break the bolts, substantially as described.

2. In a stay bolt breaking machine, the combination of a frame carrying a cylinder, apiston and rod moving in suchcylinder, a lever pivoted in the frame and connected to the piston rod, and staybolt breakingmechanism connected to the lever whereby as the piston moves back and forth the lever will be rocked in one direction and the other, to operate such mechanism substantially as described.

3. In astay bolt breaking-machine, the combination of a frame carrying a cylinder, a piston within said cylinder provided with a piston rod, a lever pivotally supported in the frame and connected to the piston rod, anda stay bolt breaking rod engaging with suohleverwhereby when the piston is moved in the cy'linderthe lever will be rockedto operate the breaking rod and break the bolt, substantially as described.

4.. In a stay bolt breaking machine, the combination of a frame, a cylinder-integral therewith, a piston moving in such cylinder and provided with a piston rod, a lever pivoted in a frame and engaging with therod, a breaking rod, and an adjustable block upon such rod engaging with the pivotedleveigwhereby when the piston is moved the lever willact upon the block to force therod in a direction to break the bolt, substantially as described.

5. In a stay bolt breaking machine,the combination of a breaking rod, 2. block adjustable thereon, a pivoted lever engaging with such block and means for rocking the lever to operate the rod, substantially as described.

6. In astay bolt breaking machine, the combination of a frame, a cylinder supported thereby, a piston and rod insuchcylinder, a lever pivoted in such frame and connected to the piston rod, a screw-threaded break rod, a block screwing along such rod, but provided with means whereby it maybe released from the screw threadson the rod to permit a-more rapid adjustment, such block engaging with the lever, substantially as described.

7. In a stay bolt breaking machine, the combination of a breaking rod, and an adjust-' able block upon such rod comprisinga box, a two-part nut therein and a suitably operated eccentric whereby such block can be screwed along the rod, or can be released from the screw threads on such rod to permit of a more rapid adjustment, substantially as described.

8. In a stay bolt breaking machine, thecombination of a framc, a cylinder integral therewith, a piston and rod moving in such cylinder, a bearing carried by the frame upon either side of the cylinder, a lever engaging with the rod and. adapted to be pivoted in either of the bearings, whereby the machine may be used for a right or left hand adj ustment, and a breaking rod operated by such lever, substantially as described.

an anchor bar, M, connected to the frame, sub- 20 stantially as described. 7

' JOHN PLAYER.

Witnesses:

GEORGE S. PAYSON, ANNIE O. COURTENAY. 

